"use client";

import Link from "next/link";
import { usePathname, useRouter } from "next/navigation";
import { useEffect, useRef, useState } from "react";
import { createClient } from "@/lib/supabase/client";
import { LaurelWreath } from "@/components/laurel-wreath";
import { Avatar } from "@/components/avatar";
import { AgoraLogo } from "@/components/agora-logo";
import {
  IconWheel,
  IconScroll,
  IconPerson,
  IconColumn,
  IconLogout,
  IconChevronDown,
  IconCalendar,
} from "@/components/icons";

type MenuEntry = {
  href: string;
  label: string;
  icon: React.ReactNode;
};

function MenuLink({
  entry,
  isActive,
  onNavigate,
}: {
  entry: MenuEntry;
  isActive: boolean;
  onNavigate: () => void;
}) {
  return (
    <Link
      href={entry.href}
      onClick={onNavigate}
      className={`flex items-center gap-3 px-4 py-2.5 text-sm transition-colors ${
        isActive ? "bg-gold/15 text-ink-2 font-medium" : "text-text-marble hover:bg-gold/10"
      }`}
    >
      <span className={isActive ? "text-gold" : "text-text-mut"}>{entry.icon}</span>
      {entry.label}
    </Link>
  );
}

export function Header({
  pseudo,
  avatarUrl,
  isJudge,
  points,
}: {
  pseudo: string;
  avatarUrl: string | null;
  isJudge: boolean;
  points: number;
}) {
  const router = useRouter();
  const pathname = usePathname();
  const [menuOpen, setMenuOpen] = useState(false);
  const [signingOut, setSigningOut] = useState(false);
  const menuRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    function handleClickOutside(event: MouseEvent) {
      if (menuRef.current && !menuRef.current.contains(event.target as Node)) {
        setMenuOpen(false);
      }
    }
    function handleKeyDown(event: KeyboardEvent) {
      if (event.key === "Escape") setMenuOpen(false);
    }
    document.addEventListener("mousedown", handleClickOutside);
    document.addEventListener("keydown", handleKeyDown);
    return () => {
      document.removeEventListener("mousedown", handleClickOutside);
      document.removeEventListener("keydown", handleKeyDown);
    };
  }, []);

  async function handleSignOut() {
    setSigningOut(true);
    const supabase = createClient();
    await supabase.auth.signOut();
    router.push("/login");
    router.refresh();
  }

  const entries: MenuEntry[] = [
    { href: "/leaderboard", label: "Le Classement", icon: <LaurelWreath className="h-5 w-5" /> },
    { href: "/roulette", label: "La Roulette", icon: <IconWheel /> },
    { href: "/calendrier", label: "Le Calendrier des Dieux", icon: <IconCalendar /> },
    { href: "/journal", label: "Le Crieur", icon: <IconScroll /> },
    { href: "/profile", label: "Mon profil", icon: <IconPerson /> },
  ];
  if (isJudge) {
    entries.push({
      href: "/admin",
      label: "Le Conseil des Archontes",
      icon: <IconColumn />,
    });
  }

  return (
    <header className="sticky top-0 z-10 bg-ink-2/95 backdrop-blur">
      <div className="mx-auto flex max-w-4xl items-center justify-between gap-2 px-2 py-2.5 sm:px-4 sm:py-3">
        <Link href="/leaderboard" className="flex min-w-0 items-center gap-1.5 sm:gap-2">
          <AgoraLogo className="h-7 w-7 sm:h-9 sm:w-9" />
          <span className="whitespace-nowrap font-heading text-[0.6rem] tracking-[0.08em] text-gold-bright uppercase sm:text-sm sm:tracking-[0.15em]">
            L&apos;Agora
          </span>
        </Link>

        <div ref={menuRef} className="relative shrink-0">
          <button
            type="button"
            onClick={() => setMenuOpen((open) => !open)}
            aria-expanded={menuOpen}
            aria-label="Ouvrir le menu"
            className="flex items-center gap-1.5 rounded-full py-1 pr-1 pl-1.5 transition-colors hover:bg-marble/10 sm:gap-2 sm:pr-1.5"
          >
            <Avatar pseudo={pseudo} avatarUrl={avatarUrl} size="xs" />
            <span className="max-w-[4.5rem] truncate text-xs font-medium text-marble sm:max-w-[9rem] sm:text-sm">
              {pseudo}
            </span>
            <span className="shrink-0 rounded-full bg-gold/15 px-1.5 py-0.5 text-[0.65rem] font-semibold text-gold-bright sm:px-2 sm:text-xs">
              {points}
            </span>
            <IconChevronDown
              className={`h-3.5 w-3.5 shrink-0 text-marble/60 transition-transform sm:h-4 sm:w-4 ${menuOpen ? "rotate-180" : ""}`}
            />
          </button>

          {menuOpen && (
            <div className="marble-surface absolute right-0 z-20 mt-2 w-64 overflow-hidden rounded-lg border border-gold/40 py-1 shadow-lg">
              {entries.map((entry) => (
                <MenuLink
                  key={entry.href}
                  entry={entry}
                  isActive={pathname.startsWith(entry.href)}
                  onNavigate={() => setMenuOpen(false)}
                />
              ))}
              <div className="my-1 border-t border-gold/20" />
              <button
                type="button"
                onClick={handleSignOut}
                disabled={signingOut}
                className="flex w-full items-center gap-3 px-4 py-2.5 text-left text-sm text-oxblood transition-colors hover:bg-oxblood/10 disabled:opacity-50"
              >
                <IconLogout className="h-5 w-5" />
                {signingOut ? "…" : "Se déconnecter"}
              </button>
            </div>
          )}
        </div>
      </div>

      <div className="meander-divider" />
    </header>
  );
}